公开(公告)号：EP1856685A2

公开(公告)日：2007-11-21

申请号：EP06710976.9

申请日：2006-02-27

申请人： Koninklijke Philips Electronics N.V.

发明人： VAN DEN HOMBERG, John ,  BERGVELD, Hendrik, J. ,  SCHOOFS, Frans

IPC分类号： G09G3/36

CPC分类号： G09G3/3685 ,  G09G3/2014 ,  G09G2300/08 ,  G09G2310/0248 ,  G09G2320/029

摘要： An active matrix display device has a column driver circuit for providing pixel drive signals to columns of pixels, and comprising current source circuits. Each current source circuit has a supply switch (78) for controlling the time during which the current source supplies current to or drains current from the column. A mapping means (74) derives from a pixel drive level a digital value which represents a time period for the control of the supply switch (78) of each current source circuit. The mapping means (74) implements a single mapping function for use in providing the digital values for all current source circuits. Having a current source circuit for each column facilitates the application of inversion patterns. The conversion of pixel drive levels to values representing time is carried out in a shared manner, so that the required area is kept to a minimum.

公开(公告)号：EP1671413A1

公开(公告)日：2006-06-21

申请号：EP04770114.9

申请日：2004-09-28

申请人： Koninklijke Philips Electronics N.V.

发明人： LUDIKHUIZE, Adriaan ,  SCHOOFS, Frans

IPC分类号： H02M3/158

CPC分类号： H03K17/04 ,  H02M3/1588 ,  Y02B70/1466

摘要： A down converter includes an interface section, which connects the down converter to switches (104, 105) and respective driver circuits (102, 103), wherein the driver circuits and the switches are combined on an integrated circuit. The driver circuits include a high-side driver circuit (102), and a low-side driver circuit (103). The integration of the driver circuits with the switches reduces parasitic inductance, particularly in power applications.

公开(公告)号：EP1813011A2

公开(公告)日：2007-08-01

申请号：EP05801775.7

申请日：2005-11-08

申请人： Koninklijke Philips Electronics N.V.

发明人： SCHOOFS, Frans

IPC分类号： H02M3/155 ,  H02M3/07

CPC分类号： H02M3/07 ,  H02M3/158 ,  H02M7/487 ,  H02M2003/1566

摘要： A power converter (1) comprises a voltage level increasing circuit (3) which receives a DC-input voltage (VIN) between first and second power converter inputs (IN1, IN2), and which has an output (O1; O2, O3) to supply an adapted input voltage having either a higher level than the input voltage (VIN) or a polarity opposite to the input voltage (VIN). A down-converter (2) has first and second down-converter inputs (IN3, IN4), a control switch (S1) with a main current path arranged between a first node (N1) and the first down­converter input (IN3), an inductor (L) arranged between the first node (N1) and a load (LO), and a sync switch (S2) arranged between the first node (N1) and the second down-converter input (IN4). A controller (4) controls the control switch (S1), and switches (S3, S4; S3, S4, S5, S6, S7, S8) of the voltage level increasing circuit (3) for either coupling the input voltage (VIN) or the adapted input voltage to the first node (N1) or to the first or second down­converter inputs (IN3, IN4).